Comparison

Audio Spectrum Analyzer Pro vs Spectrum AUv3 FFT Visualizer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Audio Spectrum Analyzer Pro

Analyze sound frequencies in real-time with this powerful tool. It offers detailed octave band analysis, FFT plots, and various measurement scales. Supports multiple microphones and noise analysis features for accurate audio insights.

Highlights
  • Octave Band Real Time Analyzer
  • FFT Plot (Fast Fourier Transform)
  • Sound level meter (dB meter)
  • Noise Rating and Noise Criterion support
  • Support for external microphones
  • Pre-calibrated mic profiles
Features
Read full description

Audio Spectrum Analyzer is a powerful real-time audio analysis app. Full of features yet very simple to use. Sound level meter (db meter a-weighted, noise rating, noise criterion) included. Feature Highlights: • Octave Band Real Time Analyzer • FFT Plot (Fast Fourier Transform) • Linear and logarithm scales • Up to 16384 FFT size • A lot of available window functions • Tracking for max value • Max and Min for any selected frequency • Stunned graphics • Reliable measurement accuracy with pre-calibrated profiles for 3 device-integrated mics • Additional precision with integrated support and pre-calibrated profiles for AirPods, AirPods Pro • Safer measurements using the Airpods Pro noise cancellation feature • Support for external microphones (wired or via Bluetooth) • Noise Rating and Noise Criterion support And many many more... Terms of Use: https://www.iubenda.com/terms-and-conditions/94359518

About

Spectrum AUv3 FFT Visualizer

Read full description

Turn sound into stunning visuals with Spectrum, an AUv3-compatible real-time spectrum analyzer for audio signals. Effortlessly monitor 29 specific frequencies from 10 Hz to 20 kHz with precision, powered by Fast Fourier Transform (FFT) data. Spectrum’s sleek graphics feature vertical markers, filled paths, and a smooth gradient background for an immersive visual experience. Enjoy accurate frequency placement with logarithmic scaling, and interact seamlessly using touch to highlight specific frequencies. Designed for performance, it dynamically adjusts to real-time data, transforms decibels, and ensures smooth, optimized rendering for flawless updates.

Screenshots

Audio Spectrum Analyzer Pro4 screens
Spectrum AUv3 FFT Visualizer2 screens

Verdict

The call

The clearest difference is price: Audio Spectrum Analyzer Pro at Free against Spectrum AUv3 FFT Visualizer's $0.99. Audio Spectrum Analyzer Pro also leads on iOS requirement (13.0 vs 15.0). Spectrum AUv3 FFT Visualizer's advantage is in-app purchases (none vs 2). On update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Audio Spectrum Analyzer Pro is free to download; Spectrum AUv3 FFT Visualizer costs $0.99 up front. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Spectrum AUv3 FFT Visualizer asks for nothing beyond the download.

UpkeepUpdate frequency

Audio Spectrum Analyzer Pro ships an update every 7 months, Spectrum AUv3 FFT Visualizer every 12 months. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
Audio Spectrum Analyzer Pro versus Spectrum AUv3 FFT Visualizer: the parameters behind the verdict, then further details
ParameterAudio Spectrum Analyzer ProSpectrum AUv3 FFT Visualizer
PriceFree — better$0.99
Rating4.4 (238 ratings) — better—
Positive reviews57.4% of reviews—
Number of ratings238 — better—
Update frequencyEvery 7 months — betterEvery 12 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size40 MB10 MB
Age rating4+4+
DeveloperVlad PolyanskiyDiscoDSP LLC

Bugs and requests

Audio Spectrum Analyzer Pro

Reported bugs

11 issues
  • App crashes on iOS 16 and iOS 26 launches
  • FFT resolution not working after iOS updates
  • Graph display freezes or becomes unresponsive
  • Spectrograph mode too slow on newer iPhones
  • Frequency alignment issues with dynamic display
Show 6 more
  • App won't uninstall properly
  • Malware warnings appearing
  • Help links and support pages broken/dead
  • Incorrect dB level readings (off by ~20dB)
  • Recording functions non-functional
  • Half black screen in certain orientations

Requested features

11 requests
  • Audio file upload capability
  • White noise/test signal generator
  • Microphone calibration file support
  • Recording functionality with timestamp
  • Multiple frequency cursors for comparison
Show 6 more
  • Ability to compare before/after curves
  • Adjustable dB level zoom/scaling
  • Saved settings and personalizations
  • Audio Unit (AUV3) plugin support
  • Peak hold reset button
  • Time-domain recording in spectrograph mode

Spectrum AUv3 FFT Visualizer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Audio Spectrum Analyzer Pro

Subscriptions1
  • Premium Mode7 Days trial$19.991 Year
One-time1
  • Premium Pack$29.99
None

Spectrum AUv3 FFT Visualizer

No in-app purchases

Questions

Is Audio Spectrum Analyzer Pro free?
Audio Spectrum Analyzer Pro is free to download, with in-app purchases available.
Is Spectrum AUv3 FFT Visualizer free?
Spectrum AUv3 FFT Visualizer costs $0.99, with no in-app purchases.
Do Audio Spectrum Analyzer Pro or Spectrum AUv3 FFT Visualizer have ads?
Neither Audio Spectrum Analyzer Pro nor Spectrum AUv3 FFT Visualizer shows ads.
Which is updated more often, Audio Spectrum Analyzer Pro or Spectrum AUv3 FFT Visualizer?
Audio Spectrum Analyzer Pro ships an update every 7 months, and Spectrum AUv3 FFT Visualizer every 12 months. Most recently, Audio Spectrum Analyzer Pro was updated on September 24, 2026 and Spectrum AUv3 FFT Visualizer on September 20, 2026.

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